Faculty Profile

BIOGRAPHY

  • PhD (2013), MSCE (2011), Civil Engineering (Geosystems Engineering), Georgia Tech
  • MS, BS, Civil Engineering (Geotechnical Engineering), Tongji University

Sheng Dai is an Assistant Professor in the School of Civil and Environmental Engineering at Georgia Institute of Technology in Atlanta, Georgia, USA. He earned his BS and MS degrees in civil engineering from Tongji University, Shanghai, China. In 2008, he joined the geosystems group at Georgia Tech, where he served as the president of the Geotechnical Society (2011-2012) and earned his MSCE and PhD degrees in civil engineering in 2011 and 2013. He then worked at the National Energy Technology Laboratory of U.S. Department of Energy before joining the faculty at Georgia Tech in 2015.

Dr. Dai has strong research and teaching interests in the energy geoengineering. His group study the fundamental physical properties and bio-thermo-hydro-mechanical-chemical coupled processes in soils and rocks at elevated pressure and temperature conditions, with applications primarily in the areas of subsurface energy and resources recovery. His group explore the scientific foundations of geomaterial behavior through wave characterization, imaging techniques, and the development of unprecedented devices (including testing theories and bio-inspired sensors). His group recently get involved in methane hydrates research at NETL/DOE and the NSF-funded Engineering Research Center (ERC) for Bio-mediated and Bio-Inspired Geotechnics (CBBG).

RESEARCH INTERESTS

  • Energy geomechanics, gas hydrate, subsurface BTHCM processes
  • Geomaterials characterization and fundamental properties
  • Flow in porous and fractured media, multiphase, microbial manipulation of subsurface flows
  • Testing techniques, lab and field instrumentation, X-ray tomography, wave characterization

HONORS & AWARDS

  • 2017, Spotlight of Research, featured in Fire in the Ice Newsletter, NETL/DOE
  • 2016, GOM2 Marine Test Technical Advisory Committee, UT/DOE
  • 2016/17, Class of 1969 Teaching Fellows, Georgia Tech
  • 2015, Pressure Core Advisory Board, US Geological Survey, US Department of Interior
  • 2013; 2014, ORISE Fellowship, DOE
  • 2013, George F. Sowers Distinguished Graduate Student Award, Georgia Tech

RECENT PUBLICATIONS & PRESENTATIONS

ARTICLES
  • Liu, Z., Dai, S., Ning, F, Peng, L., Wei, H, Wei, C. (2017). Direct shear tests on hydrate-bearing sand and silt sediments, Geophysical Research Letters, under review.
  • Nasirian, A., Cortes, D., Dai, S. (2017). The small-strain stiffness of a dry granular packing determines its thermal conductivity. Geophysical Research Letters, under review.
  • Choi, J.H., Dai, S., Lin, J.S., and Seol, Y. (2017). The Strength of Non-Cementing Methane Hydrate-Bearing Sediments. Journal of Geophysical Research, under review.
  • Dai, S., Santamarina, J.C. (2017). Stiffness evolution in frozen sands subjected to stress changes. ASCE – Journal of Geotechnical and Geoenvironmental Engineering (accepted).
  • Mahabadi, N., Dai, S., Seol, Y., Sup Yun, T., & Jang, J. (2016). The water retention curve and relative permeability for gas production from hydrate‐bearing sediments: pore‐network model simulation. Geochemistry, Geophysics, Geosystems, 17(8), 3099-3110.
PROCEEDINGS
  • Choi, J.H., Lin, J.S., Dai, S., and Seol, Y. (2017). Laboratory studies on geomechanical behavior of hydrate-bearing sediments during dissociation. 9th International Conference on Gas Hydrates, Jun 25-30, 2017, Denver, CO.
  • Dai, S., Boswell, R., Waite, W.F., Jang, J., Lee, J.Y., and Seol, Y. (2017). What has been learned from pressure cores. 9th International Conference on Gas Hydrates, Jun 25-30, 2017, Denver, CO.
  • Kim, J., Seol, Y., and Dai, S. (2017). Waves in THF hydrate-bearing sands. 9th International Conference on Gas Hydrates, Jun 25-30, 2017, Denver, CO.
  • Yang, F., Dai, S. (2017). Thermal properties measurements for hydrate-bearing sediments using single-sided heat source. 9th International Conference on Gas Hydrates, June 25-30, 2017, Denver, CO.
  • Lei, L., Liu, Z., Seol, Y., Boswell, R., and Dai, S. (2017). Hydrate formation in an unsaturated system: impacts of fine particles and water content. 9th International Conference on Gas Hydrates, June 25-30, 2017, Denver, CO.